Hey guys, never realized there was a 3D printing section! I designed this a few weeks ago, it holds up to 2 holy trainer style keys, with a hole for a padlock to be attached. I use it with a time lock so that I can't get to my keys until the timer's up The inner supports are a little tricky to remove, I suggest pliers and a screwdriver, shouldn't take more than 5 min though
This one, only goes up to 99 hours sadly, been thinking about making my own lock so it can go up to a week
I just saw this key safe... Free SCAD file Customizeable Chastity Key Safe・3D printing template to download・Cults (cults3d.com) It would need to be widened to accommodate 2 keys I think (or you just print 2 of them!). Wish I had the technology for this. pm me if you can make me one! ;-)